Rapidity is the essence of war: take advantage of the enemy's unreadiness, make your way by unexpected routes, and attack unguarded spots.
Who can determine where one ends and the other begins?
Peace proposals unaccompanied by a sworn covenant indicate a plot.
Know thy self, know thy enemy.
Victory is the main object in war.
If ignorant both of your enemy and yourself, you are certain to be in peril.